Drizzlepac/HAP: Exposure alignment problems in HAP-SVM visits

[stscijgbot-hstdp]

Issue HLA-1236 was created on JIRA by Rick White:

I noticed a couple of cases where HAP-SVM combined images have misaligned exposures, but the corresponding HLA images are properly aligned. This is a rare problem and so is not a high priority, but it would be useful to look at the HAP processing to see what went wrong.

• hst_9575_ea_acs_wfc_j8fnea HAP display HLA display
• hst_10412_11_acs_wfc_j95w11 HAP display HLA display

For the hst_10412_11_acs_wfc_j95w11 products, the f475w filter looks fine but the f814w filter is misaligned in HAP. hst_9575_ea_acs_wfc_j8fnea is a single filter visit (f775w) with only 2 exposures, which are misaligned.

Noted by RLW on 12 March in Slack: I consider this a pretty low priority since it is rare, but if you are working on HAP-SVM alignment issues, these might be good test cases.

[stscijgbot-hstdp]

Comment by Rick White on JIRA:

Here are some more examples (including the two listed in the description):

||dataset||HAP display||HLA display||notes|| |hst_9575_ea_acs_wfc_j8fnea|HAP|HLA| | |hst_10412_11_acs_wfc_j95w11|HAP|HLA| | |hst_13872_11_acs_wfc_jcn611|HAP|HLA| | |hst_13350_03_wfc3_uvis_iccx03|HAP|HLA|misaligned region upper right| |hst_13779_2c_wfc3_ir_icoi2c|HAP|HLA| |